Perhaps you should try some spelling variations:
economic experiments » economic empowerment, economic instruments
experiments tending » experiments modeling, experiments appendix
experiments during » experiences during, experiments modeling, experiments leading
tending papers » bending paper, being papers, winning papers
during papers » using papers, turing's papers, working papers
kcd economic » kcd economics, oecd economic, d economic

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( kcd economic experiments tending papers ) OR ( kcd economic experiments during papers )).
• Adding a wildcard symbol may retrieve word variants: (( kcd economic experiments tending papers ) or ( kcd economic experiments during papers ))*.